Welcome to the what3words free API

what3words has released a free API to allow developers to create applications using our memorable & accurate location service which labels every 3m x 3m square on the planet with a unique 3 word combination.

Tech spec

The JSON API has 12 methods - see the reference and sample code for more info.

Reference & sample code

Tech blog

Read about existing w3w API implementations, news and ideas. in our Tech blog


For any API enquiries please email: api-sales@what3words.com

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The what3words API requires a key for use, please click below to sign up and receive your API key.

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